diff --git a/src/student/dto/create-student.dto.ts b/src/alumno/dto/create-student.dto.ts
similarity index 100%
rename from src/student/dto/create-student.dto.ts
rename to src/alumno/dto/create-student.dto.ts
diff --git a/src/student/dto/update-student.dto.ts b/src/alumno/dto/update-student.dto.ts
similarity index 100%
rename from src/student/dto/update-student.dto.ts
rename to src/alumno/dto/update-student.dto.ts
diff --git a/src/student/entities/student.entity.ts b/src/alumno/entities/student.entity.ts
similarity index 74%
rename from src/student/entities/student.entity.ts
rename to src/alumno/entities/student.entity.ts
index cf56a28..a375e94 100644
--- a/src/student/entities/student.entity.ts
+++ b/src/alumno/entities/student.entity.ts
@@ -1,21 +1,31 @@
-import { Column, Entity, PrimaryColumn } from "typeorm";
+import { Column, Entity, PrimaryGeneratedColumn } from 'typeorm';
 
 @Entity({ name: 'alumno' })
 export class Student {
-
-  @PrimaryColumn({ name: 'id_cuenta', type: 'int', unsigned: true })
+  @PrimaryGeneratedColumn({ name: 'id_cuenta', type: 'int', unsigned: true })
   id_cuenta: number;
 
   @Column({ name: 'nombre', type: 'varchar', length: 300, nullable: false })
   nombre: string;
 
-  @Column({ name: 'fecha_nacimiento', type: 'varchar', length: 8, nullable: true })
+  @Column({
+    name: 'fecha_nacimiento',
+    type: 'varchar',
+    length: 8,
+    nullable: true,
+  })
   fecha_nacimiento: string | null;
 
   @Column({ name: 'correo', type: 'varchar', length: 100, nullable: true })
   correo: string | null;
 
-  @Column({ name: 'credito', type: 'decimal', precision: 10, scale: 2, default: 0.00 })
+  @Column({
+    name: 'credito',
+    type: 'decimal',
+    precision: 10,
+    scale: 2,
+    default: 0.0,
+  })
   credito: string;
 
   @Column({
diff --git a/src/student/student.controller.ts b/src/alumno/student.controller.ts
similarity index 100%
rename from src/student/student.controller.ts
rename to src/alumno/student.controller.ts
diff --git a/src/student/student.module.ts b/src/alumno/student.module.ts
similarity index 100%
rename from src/student/student.module.ts
rename to src/alumno/student.module.ts
diff --git a/src/student/student.service.ts b/src/alumno/student.service.ts
similarity index 100%
rename from src/student/student.service.ts
rename to src/alumno/student.service.ts
diff --git a/src/app.module.ts b/src/app.module.ts
index cba0638..30c4c4d 100644
--- a/src/app.module.ts
+++ b/src/app.module.ts
@@ -6,6 +6,9 @@ import { TypeOrmModule } from '@nestjs/typeorm';
 import { StudentModule } from './student/student.module';
 import { UserModule } from './user/user.module';
 import { User } from './user/entities/user.entity';
+import { DetalleServicioModule } from './detalle_servicio/detalle_servicio.module';
+import { PeriodoModule } from './periodo/periodo.module';
+import { ServicioModule } from './servicio/servicio.module';
 
 @Module({
   imports: [
@@ -27,6 +30,9 @@ import { User } from './user/entities/user.entity';
       }),
     }),
     UserModule,
+    DetalleServicioModule,
+    PeriodoModule,
+    ServicioModule,
   ],
   controllers: [AppController],
   providers: [AppService],
diff --git a/src/detalle_servicio/detalle_servicio.controller.spec.ts b/src/detalle_servicio/detalle_servicio.controller.spec.ts
new file mode 100644
index 0000000..4c4ec1a
--- /dev/null
+++ b/src/detalle_servicio/detalle_servicio.controller.spec.ts
@@ -0,0 +1,20 @@
+import { Test, TestingModule } from '@nestjs/testing';
+import { DetalleServicioController } from './detalle_servicio.controller';
+import { DetalleServicioService } from './detalle_servicio.service';
+
+describe('DetalleServicioController', () => {
+  let controller: DetalleServicioController;
+
+  beforeEach(async () => {
+    const module: TestingModule = await Test.createTestingModule({
+      controllers: [DetalleServicioController],
+      providers: [DetalleServicioService],
+    }).compile();
+
+    controller = module.get<DetalleServicioController>(DetalleServicioController);
+  });
+
+  it('should be defined', () => {
+    expect(controller).toBeDefined();
+  });
+});
diff --git a/src/detalle_servicio/detalle_servicio.controller.ts b/src/detalle_servicio/detalle_servicio.controller.ts
new file mode 100644
index 0000000..36a1a21
--- /dev/null
+++ b/src/detalle_servicio/detalle_servicio.controller.ts
@@ -0,0 +1,34 @@
+import { Controller, Get, Post, Body, Patch, Param, Delete } from '@nestjs/common';
+import { DetalleServicioService } from './detalle_servicio.service';
+import { CreateDetalleServicioDto } from './dto/create-detalle_servicio.dto';
+import { UpdateDetalleServicioDto } from './dto/update-detalle_servicio.dto';
+
+@Controller('detalle-servicio')
+export class DetalleServicioController {
+  constructor(private readonly detalleServicioService: DetalleServicioService) {}
+
+  @Post()
+  create(@Body() createDetalleServicioDto: CreateDetalleServicioDto) {
+    return this.detalleServicioService.create(createDetalleServicioDto);
+  }
+
+  @Get()
+  findAll() {
+    return this.detalleServicioService.findAll();
+  }
+
+  @Get(':id')
+  findOne(@Param('id') id: string) {
+    return this.detalleServicioService.findOne(+id);
+  }
+
+  @Patch(':id')
+  update(@Param('id') id: string, @Body() updateDetalleServicioDto: UpdateDetalleServicioDto) {
+    return this.detalleServicioService.update(+id, updateDetalleServicioDto);
+  }
+
+  @Delete(':id')
+  remove(@Param('id') id: string) {
+    return this.detalleServicioService.remove(+id);
+  }
+}
diff --git a/src/detalle_servicio/detalle_servicio.module.ts b/src/detalle_servicio/detalle_servicio.module.ts
new file mode 100644
index 0000000..392fb3c
--- /dev/null
+++ b/src/detalle_servicio/detalle_servicio.module.ts
@@ -0,0 +1,9 @@
+import { Module } from '@nestjs/common';
+import { DetalleServicioService } from './detalle_servicio.service';
+import { DetalleServicioController } from './detalle_servicio.controller';
+
+@Module({
+  controllers: [DetalleServicioController],
+  providers: [DetalleServicioService],
+})
+export class DetalleServicioModule {}
diff --git a/src/detalle_servicio/detalle_servicio.service.spec.ts b/src/detalle_servicio/detalle_servicio.service.spec.ts
new file mode 100644
index 0000000..53f1830
--- /dev/null
+++ b/src/detalle_servicio/detalle_servicio.service.spec.ts
@@ -0,0 +1,18 @@
+import { Test, TestingModule } from '@nestjs/testing';
+import { DetalleServicioService } from './detalle_servicio.service';
+
+describe('DetalleServicioService', () => {
+  let service: DetalleServicioService;
+
+  beforeEach(async () => {
+    const module: TestingModule = await Test.createTestingModule({
+      providers: [DetalleServicioService],
+    }).compile();
+
+    service = module.get<DetalleServicioService>(DetalleServicioService);
+  });
+
+  it('should be defined', () => {
+    expect(service).toBeDefined();
+  });
+});
diff --git a/src/detalle_servicio/detalle_servicio.service.ts b/src/detalle_servicio/detalle_servicio.service.ts
new file mode 100644
index 0000000..076b150
--- /dev/null
+++ b/src/detalle_servicio/detalle_servicio.service.ts
@@ -0,0 +1,26 @@
+import { Injectable } from '@nestjs/common';
+import { CreateDetalleServicioDto } from './dto/create-detalle_servicio.dto';
+import { UpdateDetalleServicioDto } from './dto/update-detalle_servicio.dto';
+
+@Injectable()
+export class DetalleServicioService {
+  create(createDetalleServicioDto: CreateDetalleServicioDto) {
+    return 'This action adds a new detalleServicio';
+  }
+
+  findAll() {
+    return `This action returns all detalleServicio`;
+  }
+
+  findOne(id: number) {
+    return `This action returns a #${id} detalleServicio`;
+  }
+
+  update(id: number, updateDetalleServicioDto: UpdateDetalleServicioDto) {
+    return `This action updates a #${id} detalleServicio`;
+  }
+
+  remove(id: number) {
+    return `This action removes a #${id} detalleServicio`;
+  }
+}
diff --git a/src/detalle_servicio/dto/create-detalle_servicio.dto.ts b/src/detalle_servicio/dto/create-detalle_servicio.dto.ts
new file mode 100644
index 0000000..7d0c28b
--- /dev/null
+++ b/src/detalle_servicio/dto/create-detalle_servicio.dto.ts
@@ -0,0 +1,30 @@
+import { Type } from 'class-transformer';
+import { IsDate, IsInt, IsNotEmpty, IsOptional, Min } from 'class-validator';
+
+export class CreateDetalleServicioDto {
+  @IsInt()
+  @Min(0)
+  @IsNotEmpty()
+  numero_hojas: number;
+
+  @IsOptional()
+  @Type(() => Date)
+  @IsDate()
+  fecha_operacion?: Date;
+
+  @IsInt()
+  @IsNotEmpty()
+  id_cuenta: number;
+
+  @IsInt()
+  @IsNotEmpty()
+  id_servicio: number;
+
+  @IsInt()
+  @IsNotEmpty()
+  id_usuario: number;
+
+  @IsOptional()
+  @IsInt()
+  id_periodo?: number;
+}
diff --git a/src/detalle_servicio/dto/detalle_servicio.dt.ts b/src/detalle_servicio/dto/detalle_servicio.dt.ts
new file mode 100644
index 0000000..5efa1fe
--- /dev/null
+++ b/src/detalle_servicio/dto/detalle_servicio.dt.ts
@@ -0,0 +1,9 @@
+export class DetalleServicioDto {
+  id_detalle_servicio: number;
+  numero_hojas: number;
+  fecha_operacion: Date;
+  id_cuenta: number;
+  id_servicio: number;
+  id_usuario: number;
+  id_periodo: number | null;
+}
diff --git a/src/detalle_servicio/dto/update-detalle_servicio.dto.ts b/src/detalle_servicio/dto/update-detalle_servicio.dto.ts
new file mode 100644
index 0000000..d50fec8
--- /dev/null
+++ b/src/detalle_servicio/dto/update-detalle_servicio.dto.ts
@@ -0,0 +1,4 @@
+import { PartialType } from '@nestjs/mapped-types';
+import { CreateDetalleServicioDto } from './create-detalle_servicio.dto';
+
+export class UpdateDetalleServicioDto extends PartialType(CreateDetalleServicioDto) {}
diff --git a/src/detalle_servicio/entities/detalle_servicio.entity.ts b/src/detalle_servicio/entities/detalle_servicio.entity.ts
new file mode 100644
index 0000000..a9b2b5f
--- /dev/null
+++ b/src/detalle_servicio/entities/detalle_servicio.entity.ts
@@ -0,0 +1,51 @@
+import { Column, Entity, PrimaryGeneratedColumn } from 'typeorm';
+
+@Entity({ name: 'detalle_servicio' })
+export class DetalleServicio {
+  @PrimaryGeneratedColumn({
+    name: 'id_detalle_servicio',
+    type: 'int',
+    unsigned: true,
+  })
+  id_detalle_servicio: number;
+
+  @Column('decimal', {
+    name: 'monto',
+    precision: 10,
+    scale: 2,
+    nullable: false,
+  })
+  monto: string;
+
+  @Column({ name: 'numero_hojas', type: 'int', nullable: false, default: 0 })
+  numero_hojas: number;
+
+  @Column({
+    name: 'fecha_operacion',
+    type: 'timestamp',
+    default: () => 'CURRENT_TIMESTAMP',
+    nullable: false,
+  })
+  fecha_operacion: Date;
+
+  @Column({ name: 'id_cuenta', type: 'int', nullable: false })
+  id_cuenta: number;
+
+  @Column({ name: 'id_servicio', type: 'int', nullable: false })
+  id_servicio: number;
+
+  @Column({ name: 'id_usuario', type: 'int', nullable: false })
+  id_usuario: number;
+
+  @Column({ name: 'id_perido', type: 'int', default: null })
+  id_periodo: number;
+}
+
+/*   `id_detalle_servicio` int(11) NOT NULL AUTO_INCREMENT,
+  `monto` decimal(10,2) NOT NULL,
+  `numero_hojas` int(11) NOT NULL DEFAULT 0,
+  `fecha_operacion` timestamp NOT NULL DEFAULT current_timestamp(),
+  `id_cuenta` int(9) unsigned zerofill NOT NULL,
+  `id_servicio` int(11) NOT NULL,
+  `id_usuario` int(11) NOT NULL,
+  `id_periodo` int(11) DEFAULT NULL,*/
diff --git a/src/periodo/dto/create-periodo.dto.ts b/src/periodo/dto/create-periodo.dto.ts
new file mode 100644
index 0000000..638ccf7
--- /dev/null
+++ b/src/periodo/dto/create-periodo.dto.ts
@@ -0,0 +1 @@
+export class CreatePeriodoDto {}
diff --git a/src/periodo/dto/update-periodo.dto.ts b/src/periodo/dto/update-periodo.dto.ts
new file mode 100644
index 0000000..994f395
--- /dev/null
+++ b/src/periodo/dto/update-periodo.dto.ts
@@ -0,0 +1,4 @@
+import { PartialType } from '@nestjs/mapped-types';
+import { CreatePeriodoDto } from './create-periodo.dto';
+
+export class UpdatePeriodoDto extends PartialType(CreatePeriodoDto) {}
diff --git a/src/periodo/entities/periodo.entity.ts b/src/periodo/entities/periodo.entity.ts
new file mode 100644
index 0000000..9a7e070
--- /dev/null
+++ b/src/periodo/entities/periodo.entity.ts
@@ -0,0 +1 @@
+export class Periodo {}
diff --git a/src/periodo/periodo.controller.spec.ts b/src/periodo/periodo.controller.spec.ts
new file mode 100644
index 0000000..f5eace8
--- /dev/null
+++ b/src/periodo/periodo.controller.spec.ts
@@ -0,0 +1,20 @@
+import { Test, TestingModule } from '@nestjs/testing';
+import { PeriodoController } from './periodo.controller';
+import { PeriodoService } from './periodo.service';
+
+describe('PeriodoController', () => {
+  let controller: PeriodoController;
+
+  beforeEach(async () => {
+    const module: TestingModule = await Test.createTestingModule({
+      controllers: [PeriodoController],
+      providers: [PeriodoService],
+    }).compile();
+
+    controller = module.get<PeriodoController>(PeriodoController);
+  });
+
+  it('should be defined', () => {
+    expect(controller).toBeDefined();
+  });
+});
diff --git a/src/periodo/periodo.controller.ts b/src/periodo/periodo.controller.ts
new file mode 100644
index 0000000..c6a72c6
--- /dev/null
+++ b/src/periodo/periodo.controller.ts
@@ -0,0 +1,34 @@
+import { Controller, Get, Post, Body, Patch, Param, Delete } from '@nestjs/common';
+import { PeriodoService } from './periodo.service';
+import { CreatePeriodoDto } from './dto/create-periodo.dto';
+import { UpdatePeriodoDto } from './dto/update-periodo.dto';
+
+@Controller('periodo')
+export class PeriodoController {
+  constructor(private readonly periodoService: PeriodoService) {}
+
+  @Post()
+  create(@Body() createPeriodoDto: CreatePeriodoDto) {
+    return this.periodoService.create(createPeriodoDto);
+  }
+
+  @Get()
+  findAll() {
+    return this.periodoService.findAll();
+  }
+
+  @Get(':id')
+  findOne(@Param('id') id: string) {
+    return this.periodoService.findOne(+id);
+  }
+
+  @Patch(':id')
+  update(@Param('id') id: string, @Body() updatePeriodoDto: UpdatePeriodoDto) {
+    return this.periodoService.update(+id, updatePeriodoDto);
+  }
+
+  @Delete(':id')
+  remove(@Param('id') id: string) {
+    return this.periodoService.remove(+id);
+  }
+}
diff --git a/src/periodo/periodo.module.ts b/src/periodo/periodo.module.ts
new file mode 100644
index 0000000..8834bac
--- /dev/null
+++ b/src/periodo/periodo.module.ts
@@ -0,0 +1,9 @@
+import { Module } from '@nestjs/common';
+import { PeriodoService } from './periodo.service';
+import { PeriodoController } from './periodo.controller';
+
+@Module({
+  controllers: [PeriodoController],
+  providers: [PeriodoService],
+})
+export class PeriodoModule {}
diff --git a/src/periodo/periodo.service.spec.ts b/src/periodo/periodo.service.spec.ts
new file mode 100644
index 0000000..be9458e
--- /dev/null
+++ b/src/periodo/periodo.service.spec.ts
@@ -0,0 +1,18 @@
+import { Test, TestingModule } from '@nestjs/testing';
+import { PeriodoService } from './periodo.service';
+
+describe('PeriodoService', () => {
+  let service: PeriodoService;
+
+  beforeEach(async () => {
+    const module: TestingModule = await Test.createTestingModule({
+      providers: [PeriodoService],
+    }).compile();
+
+    service = module.get<PeriodoService>(PeriodoService);
+  });
+
+  it('should be defined', () => {
+    expect(service).toBeDefined();
+  });
+});
diff --git a/src/periodo/periodo.service.ts b/src/periodo/periodo.service.ts
new file mode 100644
index 0000000..b808232
--- /dev/null
+++ b/src/periodo/periodo.service.ts
@@ -0,0 +1,26 @@
+import { Injectable } from '@nestjs/common';
+import { CreatePeriodoDto } from './dto/create-periodo.dto';
+import { UpdatePeriodoDto } from './dto/update-periodo.dto';
+
+@Injectable()
+export class PeriodoService {
+  create(createPeriodoDto: CreatePeriodoDto) {
+    return 'This action adds a new periodo';
+  }
+
+  findAll() {
+    return `This action returns all periodo`;
+  }
+
+  findOne(id: number) {
+    return `This action returns a #${id} periodo`;
+  }
+
+  update(id: number, updatePeriodoDto: UpdatePeriodoDto) {
+    return `This action updates a #${id} periodo`;
+  }
+
+  remove(id: number) {
+    return `This action removes a #${id} periodo`;
+  }
+}
diff --git a/src/servicio/dto/create-servicio.dto.ts b/src/servicio/dto/create-servicio.dto.ts
new file mode 100644
index 0000000..edd74e9
--- /dev/null
+++ b/src/servicio/dto/create-servicio.dto.ts
@@ -0,0 +1 @@
+export class CreateServicioDto {}
diff --git a/src/servicio/dto/update-servicio.dto.ts b/src/servicio/dto/update-servicio.dto.ts
new file mode 100644
index 0000000..c830b2d
--- /dev/null
+++ b/src/servicio/dto/update-servicio.dto.ts
@@ -0,0 +1,4 @@
+import { PartialType } from '@nestjs/mapped-types';
+import { CreateServicioDto } from './create-servicio.dto';
+
+export class UpdateServicioDto extends PartialType(CreateServicioDto) {}
diff --git a/src/servicio/entities/servicio.entity.ts b/src/servicio/entities/servicio.entity.ts
new file mode 100644
index 0000000..59c6847
--- /dev/null
+++ b/src/servicio/entities/servicio.entity.ts
@@ -0,0 +1 @@
+export class Servicio {}
diff --git a/src/servicio/servicio.controller.spec.ts b/src/servicio/servicio.controller.spec.ts
new file mode 100644
index 0000000..fe37ce5
--- /dev/null
+++ b/src/servicio/servicio.controller.spec.ts
@@ -0,0 +1,20 @@
+import { Test, TestingModule } from '@nestjs/testing';
+import { ServicioController } from './servicio.controller';
+import { ServicioService } from './servicio.service';
+
+describe('ServicioController', () => {
+  let controller: ServicioController;
+
+  beforeEach(async () => {
+    const module: TestingModule = await Test.createTestingModule({
+      controllers: [ServicioController],
+      providers: [ServicioService],
+    }).compile();
+
+    controller = module.get<ServicioController>(ServicioController);
+  });
+
+  it('should be defined', () => {
+    expect(controller).toBeDefined();
+  });
+});
diff --git a/src/servicio/servicio.controller.ts b/src/servicio/servicio.controller.ts
new file mode 100644
index 0000000..b1a964a
--- /dev/null
+++ b/src/servicio/servicio.controller.ts
@@ -0,0 +1,34 @@
+import { Controller, Get, Post, Body, Patch, Param, Delete } from '@nestjs/common';
+import { ServicioService } from './servicio.service';
+import { CreateServicioDto } from './dto/create-servicio.dto';
+import { UpdateServicioDto } from './dto/update-servicio.dto';
+
+@Controller('servicio')
+export class ServicioController {
+  constructor(private readonly servicioService: ServicioService) {}
+
+  @Post()
+  create(@Body() createServicioDto: CreateServicioDto) {
+    return this.servicioService.create(createServicioDto);
+  }
+
+  @Get()
+  findAll() {
+    return this.servicioService.findAll();
+  }
+
+  @Get(':id')
+  findOne(@Param('id') id: string) {
+    return this.servicioService.findOne(+id);
+  }
+
+  @Patch(':id')
+  update(@Param('id') id: string, @Body() updateServicioDto: UpdateServicioDto) {
+    return this.servicioService.update(+id, updateServicioDto);
+  }
+
+  @Delete(':id')
+  remove(@Param('id') id: string) {
+    return this.servicioService.remove(+id);
+  }
+}
diff --git a/src/servicio/servicio.module.ts b/src/servicio/servicio.module.ts
new file mode 100644
index 0000000..7c691f3
--- /dev/null
+++ b/src/servicio/servicio.module.ts
@@ -0,0 +1,9 @@
+import { Module } from '@nestjs/common';
+import { ServicioService } from './servicio.service';
+import { ServicioController } from './servicio.controller';
+
+@Module({
+  controllers: [ServicioController],
+  providers: [ServicioService],
+})
+export class ServicioModule {}
diff --git a/src/servicio/servicio.service.spec.ts b/src/servicio/servicio.service.spec.ts
new file mode 100644
index 0000000..f18d3c4
--- /dev/null
+++ b/src/servicio/servicio.service.spec.ts
@@ -0,0 +1,18 @@
+import { Test, TestingModule } from '@nestjs/testing';
+import { ServicioService } from './servicio.service';
+
+describe('ServicioService', () => {
+  let service: ServicioService;
+
+  beforeEach(async () => {
+    const module: TestingModule = await Test.createTestingModule({
+      providers: [ServicioService],
+    }).compile();
+
+    service = module.get<ServicioService>(ServicioService);
+  });
+
+  it('should be defined', () => {
+    expect(service).toBeDefined();
+  });
+});
diff --git a/src/servicio/servicio.service.ts b/src/servicio/servicio.service.ts
new file mode 100644
index 0000000..7d7bd27
--- /dev/null
+++ b/src/servicio/servicio.service.ts
@@ -0,0 +1,26 @@
+import { Injectable } from '@nestjs/common';
+import { CreateServicioDto } from './dto/create-servicio.dto';
+import { UpdateServicioDto } from './dto/update-servicio.dto';
+
+@Injectable()
+export class ServicioService {
+  create(createServicioDto: CreateServicioDto) {
+    return 'This action adds a new servicio';
+  }
+
+  findAll() {
+    return `This action returns all servicio`;
+  }
+
+  findOne(id: number) {
+    return `This action returns a #${id} servicio`;
+  }
+
+  update(id: number, updateServicioDto: UpdateServicioDto) {
+    return `This action updates a #${id} servicio`;
+  }
+
+  remove(id: number) {
+    return `This action removes a #${id} servicio`;
+  }
+}